/**
 *  Copyright (c) 1997-2013, www.tinygroup.org (luo_guo@icloud.com).
 *
 *  Licensed under the GPL, Version 3.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *       http://www.gnu.org/licenses/gpl.html
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package org.tinygroup.tinysqldsl.formitem;

import org.tinygroup.tinysqldsl.base.Alias;
import org.tinygroup.tinysqldsl.base.StatementSqlBuilder;

/**
 * 来自子查询及别名支持
 * 
 */
public class LateralSubSelect implements FromItem {

	private SubSelect subSelect;
	private Alias alias;

	public LateralSubSelect(SubSelect subSelect, Alias alias) {
		super();
		this.subSelect = subSelect;
		this.alias = alias;
	}

	public void setSubSelect(SubSelect subSelect) {
		this.subSelect = subSelect;
	}

	public SubSelect getSubSelect() {
		return subSelect;
	}

	public Alias getAlias() {
		return alias;
	}

	public void setAlias(Alias alias) {
		this.alias = alias;
	}

	public String toString() {
		return "LATERAL" + subSelect.toString()
				+ ((alias != null) ? alias.toString() : "");
	}

	public void builderFromItem(StatementSqlBuilder builder) {
		builder.appendSql(toString());
	}
}
